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Finding the Third Proportional to 734.50 and 1,644

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Solution

The third proportional to 734.50 and 1,644 is: 3,679.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.50 : 1,644 = 1,644 : x
  2. Step 2: Convert to fraction form
    734.50/1,644 = 1,644/x
  3. Step 3: Cross multiply
    734.50x = 1,644 × 1,644
  4. Step 4: Simplify right side
    734.50x = 2,702,736
  5. Step 5: Solve for x
    x = 2,702,736/734.50
  6. Step 6: Final answer
    x = 3,679.70

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Why These Related Problems?

These problems maintain the same ratio (2.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.